Given:
Total earning = $70
He spends
of the total amount on movies.
He then spends
of the remaining money on school clothes.
To find:
The remaining money.
Solution:
We have,
Total earning = $70
He spends
of the total amount on movies.
Money spent on movie is

Remining money after movie is

He then spends
of the remaining money on school clothes.
Money spent on school clothes is

Remining money after movie and school clothes is

Therefore, the remaining money is $28.